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| author | Garrett D'Amore <garrett@damore.org> | 2024-09-07 10:05:27 -0700 |
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| committer | Garrett D'Amore <garrett@damore.org> | 2024-10-06 13:53:57 -0700 |
| commit | 74adece2303ab7c2b05459c7ff24b362e9660068 (patch) | |
| tree | 61aa056b0511c444cd6d3163bbbff7fb39e1e9e7 /docs/man/nn_poll.3compat.adoc | |
| parent | cd77f58b041889f35887736c59b3eaedb60bd84c (diff) | |
| download | nng-74adece2303ab7c2b05459c7ff24b362e9660068.tar.gz nng-74adece2303ab7c2b05459c7ff24b362e9660068.tar.bz2 nng-74adece2303ab7c2b05459c7ff24b362e9660068.zip | |
Remove the documentation for 3compat.
Diffstat (limited to 'docs/man/nn_poll.3compat.adoc')
| -rw-r--r-- | docs/man/nn_poll.3compat.adoc | 102 |
1 files changed, 0 insertions, 102 deletions
diff --git a/docs/man/nn_poll.3compat.adoc b/docs/man/nn_poll.3compat.adoc deleted file mode 100644 index c115fe49..00000000 --- a/docs/man/nn_poll.3compat.adoc +++ /dev/null @@ -1,102 +0,0 @@ -= nn_poll(3compat) -// -// Copyright 2018 Staysail Systems, Inc. <info@staysail.tech> -// Copyright 2018 Capitar IT Group BV <info@capitar.com> -// -// This document is supplied under the terms of the MIT License, a -// copy of which should be located in the distribution where this -// file was obtained (LICENSE.txt). A copy of the license may also be -// found online at https://opensource.org/licenses/MIT. -// - -== NAME - -nn_poll - poll sockets (compatible API) - -== SYNOPSIS - -[source, c] ----- -#include <nanomsg/nn.h> - -#define NN_POLLIN 1 -#define NN_POLLOUT 2 - -struct nn_pollfd { - int fd; - uint16_t events; - uint16_t revents; -}; - -int nn_poll(struct nn_pollfd *pfds, int npfd, int timeout); ----- - -== DESCRIPTION - -The `nn_poll()` function polls a group of sockets for readiness to send or receive. - -NOTE: This function is provided for API -xref:nng_compat.3compat.adoc[compatibility] with legacy _libnanomsg_. -Consider using the relevant xref:libnng.3.adoc[modern API] instead. - -The array of _nfds_ sockets to poll for are passed into _pfds_. -Each member of this array is initialized with the `fd` field set to -the socket, and the `events` field set to a mask that can contain either or both -of the flags `NN_POLLIN` and `NN_POLLOUT`. - -The flag `NN_POLLIN` indicates that a socket is ready for receiving without -blocking (a message is available on the socket), and the flag `NN_POLLOUT` -indicates that a socket is ready for sending without blocking. - -Upon success, the function returns the number of updates the `revents` -field of each member of the _pfds_ array, setting it to indicate -whether the requested status is true or not. - -NOTE: The `revents` field will only have a flag set if the corresponding -flag was also set in the `events` field. - -If the _timeout_ field is positive, then this function will wait for -up the that many milliseconds. -If none of the requested events occurs before that timeout occurs, then -the function will return -1 and set the error to `ETIMEDOUT`. - -If the _timeout_ is zero, then this function will return immediately, -after updating the current status of the sockets. - -If the _timeout_ is -1, then the function waits forever, or until one of the -requested events occurs. - -IMPORTANT: This function is only suitable for use with sockets obtained with the -xref:nn_socket.3compat.adoc[`nn_socket()`] function, and is not compatible -with file descriptors obtained via any other means. -This includes file descriptors obtained using the `NN_SNDFD` or `NN_RCVFD` -options with xref:nn_getsockopt.3compat.adoc[`nn_getsockopt()`] - -NOTE: This function is significantly less efficient than other polling -or asynchronous I/O mechanisms, and is provided for API compatibility only. -It's use is discouraged. - -NOTE: This function is *not* supported on systems other than POSIX derived -platforms and Windows. - -== RETURN VALUES - -This function returns the number of sockets with events on success, or -1 on error. - -== ERRORS - -[horizontal] -`ENOMEM`:: Insufficient memory available. -`EBADF`:: One of the sockets is not open. -`ETIMEDOUT`:: Operation timed out. -`ENOTSUP`:: This function is not supported on this platform. - -== SEE ALSO - -[.text-left] -xref:nn_errno.3compat.adoc[nn_errno(3compat)], -xref:nn_recv.3compat.adoc[nn_recv(3compat)], -xref:nn_send.3compat.adoc[nn_send(3compat)], -xref:nn_socket.3compat.adoc[nn_socket(3compat)], -xref:nng_compat.3compat.adoc[nn_compat(3compat)], -xref:nng.7.adoc[nng(7)] |
